Hello Zearp.
I'm here to leave you a story to use if you don't have anything else. It was mine, but due to my poor handwriting and the fact that I often have writer's block, I'd rather leave it to your recommendation.
The story is about Tatsumi (a fused version with Incursio/Tyrant, you know) who wakes up bewildered in a desolate wasteland.
Looking around, he sees that he is alone, remembering how in his last moments of life his soul fought against Tyrant's to keep him in control, Without any direction to go, he began to walk to start tracing a path and find a place where there might be a civilization.
That's all for now, as I had planned the story as a harem type, the girls would be:
Akame (This version of Akame would awaken as a fallen angel).
Leone (This Leone would awaken while fused with her Teigu Lionel, as her base form would be the one we always see when she transforms, her second form called the berserker form would be the same form and appearance she had when she fused with her Teigu in the manga, the third and final form would be the beast form, basically the same danger beast with which her Teigu was created).
Elizabeth (Nanatsu No Taizai, version which would have all the memories of his reincarnations).
Mio Naruse (Shinmai maou no testament).
Sharon Holygrail (From the anime Engage Kiss, I gave her a little more holy and purifying power from the church, plus her weapons would be enchanted, and lastly, the armor she used in the anime.)
Liru Wolf (I gave her, just like Sharon, even more power and strength, in addition to giving her a transformation similar to Leone's with several parts of her body covered in her fur; her transformation into a wolf beast, unlike in the anime where she looks cute and small, would now look even bigger and more imposing.)
what do you think?